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nir: Add sample_positions_pan intrinsic

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Facilites the gl_SamplePosition lowering on Bifrost, where the sample
positions are accessed directly in a packed in-memory format.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8774>
This commit is contained in:
Alyssa Rosenzweig 2021-01-27 16:18:01 -05:00
parent e7dc48c309
commit 2afdcc187b
1 changed files with 3 additions and 0 deletions
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3
src/compiler/nir/nir_intrinsics.py
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@ -1101,6 +1101,9 @@ load("raw_output_pan", [1], [BASE], [CAN_ELIMINATE, CAN_REORDER])
# src[] = { sampler_index }
load("sampler_lod_parameters_pan", [1], flags=[CAN_ELIMINATE, CAN_REORDER])
# Loads the sample position array on Bifrost, in a packed Arm-specific format
system_value("sample_positions_pan", 1, bit_sizes=[64])
# R600 specific instrincs
#
# location where the tesselation data is stored in LDS